Pneumatic Cannons

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SpudFiles Potato Gun Commercial

Last post by quinn whitsitt
Posted in Combustion Cannons
Replies: 15
by PCGUY » Tue Oct 29, 2013 10:54 pm » in Combustion Cannons
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I've been wanting to get in some spud shooting action this fall before the weather got cold. I know it's been a while since I filmed anything for...

Last post

thank you for creating this website is there anything i can do to help
15 Replies

911693 Views

Last post by quinn whitsitt
Fri Feb 09, 2024 2:38 pm
Directional Control Valves (3way valves and stuff like that)

Last post by jpalf1
Replies: 86
by POLAND_SPUD » Sun Mar 07, 2010 1:12 am
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Directional Control Valves, commonly refereed to as 3,4,5 etc. valves or spool/poppet valves etc., can be very useful for spuders.
They can be used...

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very,useful info for a beginner such as myself.The links are great as well.Thankyou.(you won't believe this but as i was reading,my fridge comp...
86 Replies

447208 Views

Last post by jpalf1
Sat Apr 13, 2013 10:53 am
Sprinkler Valve Troubleshooting Guide

Last post by quinn whitsitt
Replies: 64
by noname » Sat Jun 16, 2007 12:15 am
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Sprinkler Valve Troubleshooting

This is a guide to sprinkler valve problems. Before creating a new topic to ask questions on why your valve isn't...

Last post

great job everyone
64 Replies

402130 Views

Last post by quinn whitsitt
Thu Feb 22, 2024 2:18 pm
Piston Valves Explained Visually

Last post by pavina
Replies: 178
by clide » Mon May 14, 2007 11:21 pm
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I had this posted on Spudtech, but I am reposting it here to hopefully help some people out and allow for discussions/updates.

Well I made this...

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Thanks for sharing this! It might also be useful to mention how friction and maintenance can affect performance over time. Looking forward to more...
178 Replies

622577 Views

Last post by pavina
Fri Sep 27, 2024 4:05 am
"How Much CO2 do I need?"

Last post by choke
Replies: 32
by BC Pneumatics » Sun Apr 01, 2007 9:52 pm
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For all those people out there looking for a rough idea of how much CO2 they will need for a chamber of any given size-
Just multiply the volume of...

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Great piece of software :) I've been kicking numbers round my head for a while now, and wondered if someone here could confirm. I'm filling a 1.5 dia...
32 Replies

329814 Views

Last post by choke
Thu Jul 04, 2013 2:38 pm
Valve Cutaways

Last post by jhalek90
Replies: 8
by PCGUY » Sat Feb 26, 2005 9:10 pm

First post

VALVE CUTAWAY

Provided By - Longshot

These are some pictures of some of the most popular valves used on spud cannons. Only difference is, these...

Last post

Can someone fix the picture links??

8 Replies

79161 Views

Last post by jhalek90
Wed Oct 07, 2009 2:13 pm

Topics

Shooting a microwave

Last post by jackssmirkingrevenge
Replies: 23
by Spud Destruction » Thu May 10, 2012 6:03 pm
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Episode 2 of season 2. Give me your thoughts and ideas,, let me know also is the music good or bad, would you rather have no music... Destruction...

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I used an old Russian simcard :D
23 Replies

5780 Views

Last post by jackssmirkingrevenge
Fri May 18, 2012 10:38 pm
challenge to everyone

Last post by ilovefire
Replies: 10
by ilovefire » Tue May 15, 2012 7:12 am

First post

hey everyone, dont really do much in the hobby anymore but i still think of ways to much air guns and stuff, had this idea and would love to see it...

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Them I would suggest a detente to compensate the slow open valve.

slow open valve? actually the valve should be a lot faster then most piston air...

10 Replies

5528 Views

Last post by ilovefire
Fri May 18, 2012 2:59 am
My first cannon posted on this site.

Last post by Alex345
Replies: 24
by Alex345 » Mon Nov 28, 2011 5:31 pm
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Hi there.

Although this is not the first cannon i ever built, the other two were the manual chamber-ballvalve-barrel type. Which was fun for a...

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Just a little update on this, i recently removed the entire pilot valve assembly and replaced it with a solenoid valve to act as the pilot valve. So...
24 Replies

11706 Views

Last post by Alex345
Thu May 17, 2012 2:28 pm
Check valve effect. with dremel

Last post by MrCrowley
Replies: 5
by 8tonsemi » Wed May 16, 2012 4:28 pm

First post

Can I make the grooves for the check valve effect with a dremel.

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FYI: If this is related to your piston, you should have posted this in your piston thread.

I can merge the topics if you wish but next time you want...

5 Replies

1569 Views

Last post by MrCrowley
Wed May 16, 2012 8:57 pm
Supah Valve for Sale

Last post by zerochance
Replies: 10
by zerochance » Mon May 14, 2012 7:19 pm

First post

I've got a spudgun tech Supah Valve for sale. Its a couple of years old but only used for a couple of quick tests on a temporary setup. Its a Supah...

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Okay Matt has been invoiced so this is no longer available. Glad to know it will be going to a good home.

10 Replies

2401 Views

Last post by zerochance
Wed May 16, 2012 7:43 pm
2'' porting piston cannon. video. Built fot HPA

Last post by 8tonsemi
Replies: 32
by jhalek90 » Thu Apr 05, 2012 9:46 am
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This is a 2'' porting, (1.9'' actually) metal, piston valve, with a 1000 cubic inch scuba tank as the chamber. Piloted by a 1/4'' QEV.

For now, i am...

Last post

Looks great!
32 Replies

17315 Views

Last post by 8tonsemi
Wed May 16, 2012 4:25 pm
Copper air cane

Last post by Gun Freak
Replies: 8
by kydavies » Wed May 16, 2012 12:11 am

First post

So this is my first copper gun and first serviceable piston (my unserviceable piston destroyed itself on the 2nd shot :cry: ) I havent done much...

Last post

Nice work, Ms Photogenic :wink:

Seriously it looks fun :lol:

8 Replies

5011 Views

Last post by Gun Freak
Wed May 16, 2012 4:11 pm
Hammer pilot valve with QEV

Last post by Brian the brain
Replies: 7
by KAspud » Fri May 11, 2012 2:19 pm

First post

Hi, i'm new relatively new to this but I'm planning to build a QEV or pistonvalve airgun with a hammer valve as the pilot, allowing semi-auto firing....

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Forum rule nr 1.
Not nr.2...

1!

Don't be a jerk.
Keep the flaming to a minimum. Remember, you were a noob once too. Also, keep in mind that this...

7 Replies

5100 Views

Last post by Brian the brain
Wed May 16, 2012 3:37 pm
HPA pistol musings........

Last post by High-PSI
Replies: 27
by High-PSI » Sun Apr 29, 2012 7:24 am
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Hey Guys,

I am beginning to design (in my head) a 800-1,000 psi pistol. My innitial thoughts are a 3/4 bore barrel with a scratch built piston valve...

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What you could do is make the piston diameter only slightly larger than the seat diameter.

This will give you better porting but it will also make...
27 Replies

10410 Views

Last post by High-PSI
Tue May 15, 2012 7:40 am
semi auto ?

Last post by jackssmirkingrevenge
Replies: 4
by elma » Mon May 14, 2012 2:12 pm

hi, i`m new here.please excuse my bad english and gramatics.

we have a simple selfmade qev,thats works very fine.behinde is the trigger(simpel air...

4 Replies

886 Views

Last post by jackssmirkingrevenge
Mon May 14, 2012 11:52 pm
Two stage fridge compressor build

Last post by High-PSI
Replies: 48
by High-PSI » Wed Dec 28, 2011 8:31 pm
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Hey Guys,

First I want to say thank you for all the input and advice regarding my compressor. I finally have decided on a design and have bought...

Last post

Hey Guys,

I have some more info for you..........

First, I found that the old style start relays allow the compressor to stall and restart without...
48 Replies

15775 Views

Last post by High-PSI
Mon May 14, 2012 3:59 pm
Sprinkler valve spud gun. +Damage pics

Last post by 8tonsemi

by 8tonsemi » Mon May 14, 2012 7:51 am

This is just a regular pneumatic sprinkler valve run spud gun. 1 1/2 inch chamber. 1 inch valve and 1 1/2 inch barrel. Sorry this was the only video...

0 Replies

4861 Views

Last post by 8tonsemi
Mon May 14, 2012 7:51 am
chamber to barrel reducer design for high pressure ?

Last post by jackssmirkingrevenge
Replies: 9
by matti » Wed May 05, 2010 1:45 pm

First post

Hi
I have been working with high pressure 50-200bar cannon, using the QDV valve design.
(if you dont know QDV, just think this as coaxial thing)...

Last post

-high flow
-no need for pilot vale (large 200bar pilot valve would not be cheap)
-easy and cheap to build

this is a test cannon for heavy...

9 Replies

2652 Views

Last post by jackssmirkingrevenge
Sun May 13, 2012 11:50 pm
So, whos is in northern Illinois?

Last post by kydavies
Replies: 4
by High-PSI » Thu May 10, 2012 5:39 pm

First post

Hey Guys,

Who here is in Northern Illinois? I am in McHenry county and I am looking for others to shoot with.

Anyone from the forum nearby?

Matt

Last post

Im North of the border on Vancouver Island BC

4 Replies

2671 Views

Last post by kydavies
Thu May 10, 2012 10:44 pm
Yet another QEV multishot

Last post by Goats spudz
Replies: 7
by Shichimi » Thu May 10, 2012 7:04 am

First post

Hello guys, this is my first gun and first post.
Nothing new - some china QEV,galvanized pipe as chamber,16mm ID barrel and 100-120 psi operating...

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Alternatively, a cheaper and less tiring solution is simply to use a fridge compressor, which gives you upwards of 500 psi for no effort. Mine...

7 Replies

3456 Views

Last post by Goats spudz
Thu May 10, 2012 11:38 am
What would you Guys build?

Last post by waza8u
Replies: 76
by High-PSI » Sun Oct 30, 2011 2:54 pm
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Hey Guys,

I have a couple brass Granzow diaphram (sprinkler style) valves lying around. One is a 1 inch pipe thread and one is 1 and 1/4 inch...

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that recent video was awesome..that canon has a mighty punch..and cheers for the extra info, that helped me alot 8)
76 Replies

20023 Views

Last post by waza8u
Thu May 10, 2012 8:08 am
Slightly off topic, interesting project/situation.......

Last post by jackssmirkingrevenge
Replies: 16
by High-PSI » Tue May 08, 2012 3:44 pm
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Hey Guys,

A friend of mine is CEO of an air nailer company. He and I began talking about his nailers. I asked him questions regarding trigger air...

Last post

We are talking past each other.

When I am talking about shutting off the feed to the chamber, I am also assuming the entire chamber will not be...
16 Replies

5688 Views

Last post by jackssmirkingrevenge
Thu May 10, 2012 7:31 am
T-shirt launcher for car show

Last post by jackssmirkingrevenge
Replies: 17
by jagerbond » Mon Mar 29, 2010 8:17 pm
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We we're asked to build a T-shirt launcher for giveaways at this years Honolulu international auto show for the guys at Forjworks.com . They needed...

Last post

Dakka dakka...
17 Replies

8101 Views

Last post by jackssmirkingrevenge
Mon May 07, 2012 1:53 pm
PAC 120 Bar - 1700 PSI

Last post by Petitlu
Replies: 109
by Petitlu » Fri Sep 16, 2011 4:46 am
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characteristics :

-Pressure : 120 bar - 1700psi - 170 bar max
-Caliber : 16mm - 14mm - Soon 45 caliber rifled barrel
-Rupture disk
-Removable gun...

Last post

with a muzzleloader is hard!
but I can draw as the Thorjack now ...
109 Replies

42606 Views

Last post by Petitlu
Mon May 07, 2012 11:50 am
1 1/2 inch quick exhaust valve(QEV)(where to find)

Last post by mattyzip77
Replies: 1
by 8tonsemi » Sun May 06, 2012 2:16 pm

First post

can anyone tell me where I can get a 1 1/2 inch quick exhaust valve.

Last post

The same place I told you to get a sprinkler valve, on E Bay. Search qev, diaphragm valve, dust collector valve,solenoid valve, etc. Good luck. I...

1 Replies

2291 Views

Last post by mattyzip77
Sun May 06, 2012 7:15 pm
4 inch piston

Last post by Raybateman
Replies: 15
by Raybateman » Tue Apr 24, 2012 4:01 pm
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Does anybody have an idea of how i can make a 4 inch piston for a chamber sealing piston valve?

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Thanks for all the help! unfortunately, i have to leave this design alone for now due to cost of materials and little space in my garage to store the...
15 Replies

9308 Views

Last post by Raybateman
Sun May 06, 2012 1:17 pm
bolt action coaxial?

Last post by kydavies
Replies: 8
by kydavies » Sat May 05, 2012 11:06 pm

First post

heres my design for a bolt action coaxial to be used for 40mm projectiles (filled ping pong balls and squash balls)

the main problem I for see is...

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lol, I searched bolt action coaxial and came up with nothing XD. Quark, its kinda funny how we came to the EXACT same solution.

I havent had polish...

8 Replies

3942 Views

Last post by kydavies
Sun May 06, 2012 12:25 pm
How does a QEV work?

Last post by MrCrowley
Replies: 1
by Theegle » Sun May 06, 2012 5:28 am

First post

So I have looked at this around here but I am still confused. How does it work?

Last post

Spud Wiki > Pneumatic launchers > Piston valves

Or

Pneumatic Cannon Discussion (where this topic is posted) > Sticky: Piston Valves Explained...

1 Replies

4304 Views

Last post by MrCrowley
Sun May 06, 2012 5:38 am
How to fix the sprinkler valve goose sound.

Last post by Brian the brain
Replies: 8
by nosmokingbandit » Thu May 03, 2012 9:31 pm

First post

I Just finished building an air-powered sprinkler-valve spud gun and I have a slow leak. After checking all of the pipe fittings (i used galvanized...

Last post

What if your pilot valve leaks, or worse, bumps and breaks while your loading??

I had a leaking pilot once when fellow member Psycix viseted me.....

8 Replies

3739 Views

Last post by Brian the brain
Sun May 06, 2012 4:20 am
First Rifle (1/4" BB) - Simple design w/shock pump

Last post by jackssmirkingrevenge
Replies: 19
by cane toad » Mon May 09, 2011 1:51 am
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Hi,

This is my first post, sorry for any mistakes. My work mate and I built a couple of variations of this gun last year for [ COMMENT REMOVED BY...

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Nice valve!
Any idea on what sorta pressure it's rated to?
And what sort of opening time it has?
Would it be similar to a ballvalve or rather to a...
19 Replies

15125 Views

Last post by jackssmirkingrevenge
Sun May 06, 2012 4:16 am

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